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llvmpipe: fix color masking

This commit is contained in:
Brian Paul 2010-04-16 14:08:15 -06:00
parent b2c1b944c9
commit 862d014ba9
1 changed files with 4 additions and 2 deletions
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6
src/gallium/drivers/llvmpipe/lp_state_fs.c
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@ -1117,14 +1117,16 @@ make_variant_key(struct llvmpipe_context *lp,
assert(format_desc->layout == UTIL_FORMAT_COLORSPACE_RGB ||
format_desc->layout == UTIL_FORMAT_COLORSPACE_SRGB);
key->blend.rt[i].colormask = lp->blend->rt[i].colormask;
/* mask out color channels not present in the color buffer.
* Should be simple to incorporate per-cbuf writemasks:
*/
for(chan = 0; chan < 4; ++chan) {
enum util_format_swizzle swizzle = format_desc->swizzle[chan];
if(swizzle <= UTIL_FORMAT_SWIZZLE_W)
key->blend.rt[0].colormask |= (1 << chan);
if(swizzle > UTIL_FORMAT_SWIZZLE_W)
key->blend.rt[i].colormask &= ~(1 << chan);
}
}